#include <iostream>
using namespace std;

class CMyclass {
	public:
		int n;
		CMyclass() {};
		CMyclass(CMyclass &c) {
			n = 2 * c.n;
		}
};

int main() {
	CMyclass c1, c2;
	c1.n = 5;
	c2 = c1;
	CMyclass c3(c1);
	cout << "c2.n=" << c2.n << ",";
	cout << "c3.n=" << c3.n << endl;
	return 0;
}